Automatic drainage device for cable threading pipe in explosion-proof area

Abstract

The utility model provides an automatic drainage device for a cable threading pipe in an explosion-proof area, an end cover is arranged at the end part of a connecting pipe, a screen plate is arranged at the opening position of the end part of the end cover, glass wool is arranged between the screen plate of the end cover and the end part of the connecting pipe, and the upper end of the connecting pipe is connected with a drainage pipe opening. The connecting pipe with the net plate and the glass wool and the end cover are installed below the drainage pipe opening of the threading box, liquid such as rainwater can be effectively prevented from being accumulated in the threading box, and therefore electrical equipment and cables are prevented from being damaged or short-circuited due to accumulated water. Due to the arrangement of the net plate and the glass wool, water can be drained, the explosive gas or the dust can be prevented from entering the drainage pipe opening, and it is guaranteed that the anti-explosion performance of the system is not affected.

Description

Technical Field

[0001] The utility model relates to the field of drainage of wire conduits, in particular to an automatic drainage device for wire conduits in explosion-proof areas for cables. Background Art

[0002] In explosion-proof areas, a large number of galvanized wire conduits are installed to achieve the safe layout of electrical circuits. These wire conduits and their connectors (such as wire junction boxes) adopt a fully sealed structural design to prevent explosive gases or dust from entering the pipe and causing potential explosion risks.

[0003] Although a fully sealed structure is adopted, it is found in actual use that rainwater can penetrate into the wire conduits, wire junction boxes, lighting fixtures, and electrical control boxes, and due to the closed nature of the system, this accumulated water cannot drain out by itself. The existence of accumulated water leads to the following problems: When the accumulated water comes into contact with the wires, it may cause a short circuit, affecting the normal operation of the electrical system. Long-term accumulated water may also corrode electrical equipment and cables, resulting in equipment damage. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an automatic drainage device for wire conduits in explosion-proof areas for cables, so as to solve the problems that when the accumulated water comes into contact with the wires, it may cause a short circuit, affecting the normal operation of the electrical system. Long-term accumulated water may also corrode electrical equipment and cables, resulting in equipment damage.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: an automatic drainage device for wire conduits in explosion-proof areas for cables, including a connecting pipe, with an end cover provided at the end of the connecting pipe, a mesh plate provided at the opening position of the end of the end cover, glass wool provided between the mesh plate of the end cover and the end of the connecting pipe, and the upper end of the connecting pipe is connected to a drain pipe opening.

[0006] In a preferred solution, the upper end of the connecting pipe is threadedly connected or clamped to the drain pipe opening.

[0007] In a preferred solution, the end cover and the lower end of the connecting pipe are clamped or threadedly connected.

[0008] In a preferred solution, a rotating platform is provided at the middle position of the connecting pipe, and the top view of the rotating platform has a hexagonal structure.

[0009] In a preferred solution, a cleaning hole is also provided at a position above the rotating platform of the connecting pipe, the hole of the cleaning hole faces the opening position at the lower end of the connecting pipe, and a valve is provided on the cleaning hole.

[0010] In a preferred solution, the lower end of the valve body of the valve has an external thread, and the external thread is threadedly connected to the cleaning hole.

[0011] In the preferred embodiment, a valve stem is further provided inside the valve body. The lower end of the valve stem passes through the valve seat and is connected to the valve cover, and the valve cover abuts against the opening position of the valve seat.

[0012] The upper end of the valve stem passes through the support platform near the upper opening of the valve body. A limiting platform is also provided on the valve stem. The limiting platform is arranged below the support platform, and a spring is provided between the limiting platform and the valve seat. The spring is sleeved on the valve stem.

[0013] In the preferred embodiment, the valve stem is slidably connected to the support platform. Multiple holes are provided on the support platform, and the limiting platform covers the multiple holes.

[0014] When the valve stem is pressed downward, the holes on the support platform and the valve seat are opened, and high-pressure gas is injected to blow out the water inside the drain pipe orifice.

[0015] The utility model provides an automatic drainage device for cable threading pipes in explosion-proof areas. By installing a connecting pipe and an end cover with a mesh plate and glass wool below the drain pipe orifice of the threading box, it can effectively prevent liquid such as rainwater from accumulating inside the threading box, thereby avoiding damage or short circuit of electrical equipment and cables due to water accumulation.

[0016] Prevent the entry of explosive gases or dust: The setting of the mesh plate and glass wool can not only drain water but also prevent explosive gases or dust from entering the inside of the drain pipe orifice, ensuring that the explosion-proof performance of the system is not affected.

[0017] Easy to maintain: The end cover in the design is convenient for disassembly and installation, facilitating regular cleaning of the mesh plate and replacement of the glass wool to ensure the long-term effective operation of the drainage system.

[0018] Safe and reliable: The whole device has a simple structure and is easy to install. It can effectively solve the water accumulation problem, while ensuring the safe and stable operation of electrical equipment in the explosion-proof area and reducing the accident risk caused by water accumulation.

[0019] Strong applicability: The automatic drainage device is applicable to threading boxes in various explosion-proof areas and can be widely used in electrical installation environments that require explosion-proof and waterproof functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further illustrates the utility model with reference to the drawings and embodiments:

[0021] Figure 1 is the structural diagram of the installation position of the drainage device of the utility model;

[0022] Figure 2 is the structural diagram of the drainage device of the utility model;

[0023] Figure 3 is the structural diagram of the installation of the air valve of the drainage device of the utility model;

[0024] Figure 4It is the structure diagram of the connection pipe of the utility model for installing the air valve.

[0025] Figure 5 It is the structure diagram of the air valve of the utility model.

[0026] In the figure: threading pipe 1; wiring box 2; drain pipe opening 3; connecting pipe 4; rotating table 401; cleaning hole 402; end cover 5; glass wool 6; mesh plate 7; air valve 8; valve body 801; valve stem 802; support platform 803; spring 804; valve seat 805; valve cover 806. Specific embodiments

[0027] As Figures 1 to 5 shown, an automatic drainage device for cable threading pipes in explosion-proof areas includes a connecting pipe 4. An end cover 5 is provided at the end of the connecting pipe 4. A mesh plate 7 is provided at the opening position of the end of the end cover 5. Glass wool 6 is provided between the mesh plate 7 of the end cover 5 and the end of the connecting pipe 4. The upper end of the connecting pipe 4 is connected to the drain pipe opening 3. When rainwater or other liquids seep into the interior of the wiring box 2 and pass through the drain pipe opening 3, these liquids first pass through the mesh plate 7 in the end cover 5, and the mesh plate can effectively prevent external explosive gases or dust from entering the interior of the drain pipe opening 3.

[0028] The liquid then passes through the glass wool 6 filled between the end cover 5 and the connecting pipe 4, and the filtered liquid finally drains out from the connecting pipe 4, ensuring that the accumulated water inside the wiring box 2 can be drained in time while maintaining the safety performance of the explosion-proof area. Through a special structural design, the problem of accumulated water caused by rainwater seeping into the wiring box 2 is effectively solved. By using the dual filtering mechanism of the mesh plate 7 and the glass wool 6, it is ensured that external harmful substances cannot enter the interior of the drain pipe opening. This device can effectively drain the accumulated water, reduce the risk of electrical equipment short circuit, and improve the safety and reliability of the system. The structure is simple, facilitating regular cleaning and maintenance.

[0029] In a preferred embodiment, the upper end of the connecting pipe 4 is threadedly connected or clamped to the drain pipe opening 3. In this application, a threaded connection is preferably used, and the external thread at the upper end of the connecting pipe 4 is threadedly connected to the internal thread of the drain pipe opening 3.

[0030] In a preferred embodiment, the end cover 5 is clamped or threadedly connected to the lower end of the connecting pipe 4. The external thread at the lower end of the end cover 5 is threadedly connected to the internal thread of the end cover 5, facilitating installation and disassembly.

[0031] In a preferred embodiment, a rotating table 401 is provided at the middle position of the connecting pipe 4, and the top view of the rotating table 401 is in a hexagonal structure. The rotating table 401 is in the structure of a hexagonal nut, and the nut structure facilitates the rotation of the connecting pipe 4.

[0032] In a preferred embodiment, a cleaning hole 402 is also provided at a position above the rotating table 401 of the connecting pipe 4. The cleaning hole 402 is inclined, and the hole opening faces the lower end opening position of the connecting pipe 4. A valve 8 is provided on the cleaning hole 402. The high-pressure air gun is connected to the valve 8. After the valve 8 is opened, high-pressure gas is blown into the connecting pipe 4 to blow the water out of the inside of the connecting pipe 4.

[0033] The cleaning hole 402 is provided at a position above the rotating table 401 of the connecting pipe 4, is inclined, and the hole opening faces the lower end opening position of the connecting pipe 4, and is used for cleaning impurities inside the connecting pipe. The valve 8 is installed on the cleaning hole 402 and is used for connecting the high-pressure air gun.

[0034] When it is necessary to clean the inside of the connecting pipe 4, the high-pressure air gun can be connected to the valve 8. After the valve 8 is opened, high-pressure gas is blown into the connecting pipe 4 to blow the water out of the inside of the connecting pipe 4 and remove the possibly accumulated impurities.

[0035] In a preferred embodiment, an external thread is provided at the lower end of the valve body 801 of the valve 8, and the external thread is threadedly connected to the cleaning hole 402. The external thread at the lower end of the valve body 801 is threadedly connected to the internal thread of the cleaning hole 402, which is convenient for installation and disassembly.

[0036] In a preferred embodiment, a valve rod 802 is further provided inside the valve body 801. The lower end of the valve rod 802 passes through the valve seat 805 and is connected to the valve cover 806. The valve cover 806 abuts against the opening position of the valve seat 805;

[0037] The upper end of the valve rod 802 passes through the support platform 803 near the upper end opening position of the valve body 801. A limiting platform is also provided on the valve rod 802. The limiting platform is arranged below the support platform 803. A spring 804 is provided between the limiting platform and the valve seat 805. The spring 804 is sleeved on the valve rod 802. The valve rod 802 is slidably connected to the support platform 803. Multiple holes are provided on the support platform 803, and the limiting platform covers the multiple holes; when the valve rod 802 is pressed downward, the holes on the support platform 803 and the valve seat 805 are opened, and high-pressure gas is injected to blow the water inside the drain pipe opening 3 out.

[0038] Under normal conditions, the valve cover 806 abuts against the opening position of the valve seat 805 to form a seal. When it is necessary to clean the inside of the connecting pipe 4, the valve rod 802 can be pressed downward by an external force to separate the valve cover 806 from the valve seat 805. At this time, the holes on the support platform 803 and the valve seat 805 are opened, allowing high-pressure gas to enter. The high-pressure gas is injected into the connecting pipe 4 through the cleaning hole 402 to blow out the accumulated water, completing the drainage process. When the external force is removed, the elastic force of the spring 804 causes the valve cover 806 to return to the initial position and form a seal with the valve seat 805 again. Through the special structural design, the problem of water accumulation caused by rainwater seeping into the wire threading box is effectively solved.

[0039] The above embodiments are only the preferred technical solutions of the present utility model, and should not be regarded as a limitation to the present utility model. The protection scope of the present utility model shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present utility model.

Claims

1. An automatic drainage device for cable conduits in explosion-proof areas, characterized in that: It includes a connecting pipe (4). An end cover (5) is provided at the end of the connecting pipe (4). A mesh plate (7) is provided at the opening position of the end of the end cover (5). Glass wool (6) is provided between the mesh plate (7) of the end cover (5) and the end of the connecting pipe (4). The upper end of the connecting pipe (4) is connected to the drain pipe opening (3).

2. The automatic drainage device for cable threading pipes in explosion-proof areas according to claim 1, wherein: The upper end of the connecting pipe (4) is threadedly connected or clamped to the drain pipe opening (3).

3. The automatic drainage device for cable conduit in explosion-proof area according to claim 1 is characterized in that: The end cover (5) and the lower end of the connecting pipe (4) are clamped or threadedly connected to the end cover (5).

4. The automatic drainage device for cable threading pipes in explosion-proof areas according to claim 1 is characterized in that: A rotating table (401) is provided at the middle position of the connecting pipe (4). The top view of the rotating table (401) is a hexagonal structure.

5. The automatic drainage device for cable threading pipes in explosion-proof areas according to claim 4, characterized in that: A cleaning hole (402) which is inclined is also provided at the position above the rotating table (401) of the connecting pipe (4). The hole of the cleaning hole (402) faces the opening position of the lower end of the connecting pipe (4). A valve (8) is provided on the cleaning hole (402).

6. The automatic drainage device for cable conduit in explosion-proof area according to claim 5, characterized in that: The lower end of the valve body (801) of the valve (8) is provided with an external thread, and the external thread is threadedly connected to the cleaning hole (402).

7. The automatic drainage device for cable threading pipes in explosion-proof areas according to claim 6, wherein: A valve rod (802) is also provided inside the valve body (801). The lower end of the valve rod (802) passes through the valve seat (805) and is connected to the valve cover (806). The valve cover (806) abuts against the opening position of the valve seat (805); The upper end of the valve rod (802) passes through the support platform (803) near the opening position of the upper end of the valve body (801). A limiting platform is also provided on the valve rod (802). The limiting platform is arranged below the support platform (803). A spring (804) is provided between the limiting platform and the valve seat (805). The spring (804) is sleeved on the valve rod (802).

8. The automatic drainage device for cable threading pipes in explosion-proof areas according to claim 7, characterized in that: The valve rod (802) is slidably connected to the support platform (803). Multiple holes are provided on the support platform (803), and the limiting platform covers the multiple holes; When the valve rod (802) is pressed downwards, the holes on the support platform (803) and the valve seat (805) are opened, and high-pressure gas is injected to blow out the water inside the drain pipe opening (3).

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